5'11'' is the average size.
chris Johnson by far.
Adrian Peterson or Chris Johnson
Walter "sweetness" Payton
Kindly refer to the link attached below.
That's an opinion. But mine is Mike Vick.
Emmitt Smith with 18,355
He is still in college
the average size of a NFL center is 6'4-6'7 and there weight is between 260 and 295